On Fri, May 02, 2003 at 02:38:44PM +0100, James Stevenson wrote: > Hi > > i have a PCI card with several embedded cpu's on it which can generate irq's > to the host across the pci interface. I would like these to be used from a > programming executing on the host. > > What is the best way todo this ? > > The only thing i have though about is so use signals but what would > be a good signal to use to so support functionality like that ? Signals are slow, pushing info to process using signals is not extremely nice and neither is writing signal handling in user-land. I would suggest you make a device and implement poll and/or sending notification signal (set by F_SETSIG fcntl). Thus you could either have a thread waiting in poll for an interrupt or handling it in signal handler it chooses. ------------------------------------------------------------------------------- Jan 'Bulb' Hudec <bulb@ucw.cz> -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
